public class Solution {
    public static void main(String[] args) {
        BinaryTree binaryTree = new BinaryTree();
        BinaryTree.TreeNode root = binaryTree.CreateTree();

        binaryTree.PrevOrder(root);
        System.out.println("=====");

        binaryTree.inOrder(root);
        System.out.println("=====");

        binaryTree.postOrder(root);
        System.out.println("=====");


    }
}
